АНАЛИЗ ОТДЕЛЬНЫХ ВИДОВ CLADOCERA И COPEPODA МЕЗОТРОФНОГО ОЗЕРА С ИСПОЛЬЗОВАНИЕМ PHENOM PROX-SEM/EDS

Цель данного исследования – определение содержания основных биохимических элементов в отдельных видах зоопланктона из разных биотопов мезотрофного озера и оценка стехиометрического состава зоопланктона. Стехиометрический анализ Cladocera и Copepoda из четырех различных мест обитания в литоральной и пелагической зонах озера Обстерно (Беларусь) проведен в сентябре 2016 г. с использованием метода, основанного на рентгеновском микроанализе, Phenom Prox Scanning Electron Microscope (SEM) с элементной системой обнаружения (EDS). С помощью Phenom Prox SEM/EDS определен атомный массовый процент углерода, азота и фосфора в поверхностной области тканей карапакса зоопланктона и рассчитаны соотношения C:N, C:P, N:P для Cladocera из зарослей камыша и кубышки и для Copepoda из пелагиали, чистой литорали, камыша и кубышки. Для Cladocera содержание углерода в тканях было значительно выше в пелагиали (p < 0,01), а содержание азота и фосфора, напротив, было ниже в пелагиали (p < 0,01) по сравнению с другими средами обитания. В случае с Copepoda содержание углерода и азота в их тканях не различалось в зависимости от среды обитания. Значительные различия концентраций в зависимости от места обитания обнаружены для фосфора – его содержание было значительно выше у Copepoda из пелагиали по сравнению с копеподами из кубышки (p < 0,01). 

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